R devel - Apr 2023 - Should '@" now be listed in tools:::.get_internal_S3_generics() ?

I was building a package that uses the new generic @ and kept having errors with
?roxygen2? documentation. ?roxygen2? generated NAMESPACE added `@.newclass` as a
newly exported function, not as a S3method.

At first I thought this must be a bug in roxygen2 and they lag behind the new
developments in R. But after some investigation I found that ?roxygen2? is using
tools:::.get_internal_S3_generis() to decide if the method should be exported as
S3method or not. For some reason ?@<-? is listed in there, but ?@? is not.

Am I missing some context, or is this an oversight?

Kind regards,
Karolis Koncevicius

This issue might go deeper - I was not successful in passing R CMD checks for
the usage files. R CMD check kept showing errors for `@` declarations, even thou
they were identical to `$` declarations (which passed fine).

Seems like the usage check functions are not prepared for `@` - also in
tools:::.S3_method_markup_regexp
> On Apr 28, 2023, at 10:34 PM, Karolis Koncevi?ius <karolis.koncevicius
at gmail.com> wrote:
> 
> I was building a package that uses the new generic @ and kept having errors
with ?roxygen2? documentation. ?roxygen2? generated NAMESPACE added `@.newclass`
as a newly exported function, not as a S3method.
> 
> At first I thought this must be a bug in roxygen2 and they lag behind the
new developments in R. But after some investigation I found that ?roxygen2? is
using tools:::.get_internal_S3_generis() to decide if the method should be
exported as S3method or not. For some reason ?@<-? is listed in there, but
?@? is not.
> 
> Am I missing some context, or is this an oversight?
> 
> Kind regards,
> Karolis Koncevicius